<template>
  <div class="app-container">
    <div class="filter-container">
      <el-input v-model="listQuery.title" placeholder="请输入活动主题" style="width: 200px;" class="filter-item" @keyup.enter.native="handleFilter" />
      <el-select v-model="listQuery.importance" placeholder="Imp" clearable style="width: 90px" class="filter-item">
        <el-option v-for="item in importanceOptions" :key="item" :label="item" :value="item" />
      </el-select>
      <el-select v-model="listQuery.type" placeholder="Type" clearable class="filter-item" style="width: 130px">
        <el-option v-for="item in calendarTypeOptions" :key="item.key" :label="item.display_name+'('+item.key+')'" :value="item.key" />
      </el-select>
      <el-select v-model="listQuery.sort" style="width: 140px" class="filter-item" @change="handleFilter">
        <el-option v-for="item in sortOptions" :key="item.key" :label="item.label" :value="item.key" />
      </el-select>
      <el-button v-waves class="filter-item" type="primary" icon="el-icon-search" @click="handleFilter">
        搜索
      </el-button>
      <el-button class="filter-item" style="margin-left: 10px;" type="primary" icon="el-icon-edit" @click="handleCreate">
        新增
      </el-button>
      <el-button v-waves :loading="downloadLoading" class="filter-item" type="primary" icon="el-icon-download" @click="handleDownload">
        导出
      </el-button>
      <el-checkbox v-model="showReviewer" class="filter-item" style="margin-left:15px;" @change="tableKey=tableKey+1">
        reviewer
      </el-checkbox>
    </div>

    <el-table
      :key="tableKey"
      v-loading="listLoading"
      :data="list"
      border
      fit
      highlight-current-row
      empty-text
      style="width: 100%;"
      @sort-change="sortChange"
    >
      <el-table-column label="ID" prop="id" sortable="custom" align="center" width="80" :class-name="getSortClass('id')">
        <template slot-scope="{row}">
          <span>{{ row.id }}</span>
        </template>
      </el-table-column>
      <el-table-column label="活动主题" width="300px">
        <template slot-scope="{row}">
          <span class="link-type" @click="handleUpdate(row)">{{ row.theme }}</span>
          <!--<el-tag>{{ row.type | typeFilter }}</el-tag>-->
        </template>
      </el-table-column>
      <el-table-column label="活动起始日期" width="200px" align="center">
        <template slot-scope="{row}">
          <span>{{ fomatDate(row.themeBeginTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="活动截止日期" width="200px" align="center">
        <template slot-scope="{row}">
          <span>{{ fomatDate(row.themeEndTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column v-if="showReviewer" label="Reviewer" width="110px" align="center">
        <template slot-scope="{row}">
          <span style="color:red;">{{ row.reviewer }}</span>
        </template>
      </el-table-column>
      <el-table-column label="活动创建人" width="120px" align="center">
        <template slot-scope="{row}">
          <span>{{ row.creator }}</span>
        </template>
      </el-table-column>
      <el-table-column label="活动状态" class-name="status-col" width="100">
        <template slot-scope="{row}">
          <el-tag :type="row.themeStatus | statusFilter">
            {{ row.themeStatus }}
          </el-tag>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" width="285" class-name="small-padding fixed-width">
        <template slot-scope="{row,$index}">
          <el-button type="primary" size="mini" @click="handleUpdate(row)">
            编辑
          </el-button>
          <el-button v-if="row.themeStatus!='有效'" size="mini" type="success" @click="handleModifyStatus(row,'有效')">
            有效
          </el-button>
          <el-button v-if="row.themeStatus!='过期'" size="mini" @click="handleModifyStatus(row,'过期')">
            过期
          </el-button>
          <el-button v-if="row.themeStatus!='deleted'" size="mini" type="danger" @click="handleDelete(row,$index)">
            删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total>0" :total="total" :page.sync="listQuery.page" :limit.sync="listQuery.limit" @pagination="getList" />

    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form ref="dataForm" :rules="rules" :model="temp" label-position="left" label-width="100px" style="width: 400px; margin-left:50px;">
        <el-form-item label="活动主题" prop="theme">
          <el-input v-model="temp.theme" />
        </el-form-item>
        <el-form-item label="活动创建日期" prop="themeBeginTime">
          <el-date-picker v-model="temp.themeBeginTime" type="date" placeholder="Please pick a date" />
        </el-form-item>
        <el-form-item label="活动截止日期" prop="themeEndTime">
          <el-date-picker v-model="temp.themeEndTime" type="date" placeholder="Please pick a date" />
        </el-form-item>
        <el-form-item label="活动创建人" prop="issue">
          <el-input v-model="temp.creator" />
        </el-form-item>
        <el-form-item label="活动状态">
          <el-select v-model="temp.themeStatus" class="filter-item" placeholder="Please select">
            <el-option v-for="item in statusOptions" :key="item" :label="item" :value="item" />
          </el-select>
        </el-form-item>
        <el-form-item label="活动内容">
          <el-input v-model="temp.content" :autosize="{ minRows: 2, maxRows: 8}" type="textarea" placeholder="Please input" />
        </el-form-item>

        <el-dialog :visible.sync="dialogVisible" append-to-body>
          <img width="100%" fit="contain" :src="dialogImageUrl" alt="">
        </el-dialog>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">
          Cancel
        </el-button>
        <el-button type="primary" @click="dialogStatus==='create'?createData():updateData()">
          Confirm
        </el-button>
      </div>
    </el-dialog>

    <el-dialog :visible.sync="dialogPvVisible" title="Reading statistics">
      <el-table :data="pvData" border fit highlight-current-row style="width: 100%">
        <el-table-column prop="key" label="Channel" />
        <el-table-column prop="pv" label="Pv" />
      </el-table>
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="dialogPvVisible = false">Confirm</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import { deleteById,themeList, fetchPv, createArticle, updateArticle, changeStatus,getImgList } from '@/api/theme'
import waves from '@/directive/waves' // waves directive
import { parseTime } from '@/utils'
import Pagination from '@/components/Pagination' // secondary package based on el-pagination

const calendarTypeOptions = [
  { key: 'CN', display_name: '' },
  { key: 'US', display_name: '' },
  { key: 'JP', display_name: '' },
  { key: 'EU', display_name: '' }
]

// arr to obj, such as { CN : "China", US : "USA" }
const calendarTypeKeyValue = calendarTypeOptions.reduce((acc, cur) => {
  acc[cur.key] = cur.display_name
  return acc
}, {})

export default {
  name: 'Theme',
  components: { Pagination },
  directives: { waves },
  filters: {
    statusFilter(status) {
      const statusMap = {
        有效: 'success',
        过期: 'info',
        deleted: 'danger'
      }
      return statusMap[status]
    },
    typeFilter(type) {
      return calendarTypeKeyValue[type]
    }
  },
  data() {
    return {
      imageUrl: '',
      fileList: [],
      tableKey: 0,
      list: null,
      total: 0,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 10,
        importance: undefined,
        title: undefined,
        type: undefined,
        sort: '+id'
      },
      importanceOptions: [1, 2, 3],
      calendarTypeOptions,
      sortOptions: [{ label: 'ID Ascending', key: '+id' }, { label: 'ID Descending', key: '-id' }],
      statusOptions: ['有效', '过期', ],
      showReviewer: false,
      temp: {
        id: undefined,
        theme: '',
        content: '',
        themeStatus: '',
        themeBeginTime: new Date(),
        themeEndTime: null,
        creator: ''
      },
      actionUrl: "", // 这是在data里边定义的
      dialogFormVisible: false,
      dialogImageUrl: "",
      dialogVisible: false,
      dialogStatus: '',
      textMap: {
        update: 'Edit',
        create: 'Create'
      },
      dialogPvVisible: false,
      pvData: [],
      rules: {
        type: [{ required: true, message: 'type is required', trigger: 'change' }],
        timestamp: [{ type: 'date', required: true, message: 'timestamp is required', trigger: 'change' }],
        title: [{ required: true, message: 'title is required', trigger: 'blur' }]
      },
      downloadLoading: false
    }
  },
  created() {
    this.getList()
  },
  methods: {
    getList() {
      this.listLoading = true
      themeList(this.listQuery).then(response => {
        console.log(response)
        this.list = response.data.records
        this.total = response.data.total

        // Just to simulate the time of the request
        setTimeout(() => {
          this.listLoading = false
        }, 1.5 * 1000)
      })
    },

    getImg() {
      getImgList(this.temp.id).then(response => {
        // console.log(this.listQuery);
        this.fileList = response.data
        console.log(response.data)
      })
    },

    handleFilter() {
      this.listQuery.page = 1
      this.getList()
    },
    handleModifyStatus(row, status) {
      row.themeStatus = status
      changeStatus(row.id, status).then(() => {
        this.listLoading = false
        this.$message({
          message: '操作成功',
          type: 'success'
        })
      })
    },
    sortChange(data) {
      const { prop, order } = data
      if (prop === 'id') {
        this.sortByID(order)
      }
    },
    sortByID(order) {
      if (order === 'ascending') {
        this.listQuery.sort = '+id'
      } else {
        this.listQuery.sort = '-id'
      }
      this.handleFilter()
    },
    resetTemp() {
      this.temp = {
        id: undefined,
        theme: '',
        content: '',
        themeStatus: '',
        themeBeginTime: new Date(),
        themeEndTime: null,
        creator: ''
      }
    },
    handleCreate() {
      this.resetTemp()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    createData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          // this.temp.id = parseInt(Math.random() * 100) + 1024 // mock a id
          // this.temp.author = 'vue-element-admin'
          createArticle(this.temp).then(() => {
            this.list.unshift(this.temp)
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: 'Created Successfully',
              type: 'success',
              duration: 2000
            })
            this.getList()
          })
        }
      })
    },
    handleUpdate(row) {
      // console.log(row)
      this.temp = Object.assign({}, row) // copy obj
      this.temp.timestamp = new Date(this.temp.timestamp)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.actionUrl = "http://82.157.231.88:8888/education/upload?id="+this.temp.id
      getImgList(this.temp.id).then(response => {
        this.fileList = response.data
        console.log(response.data)
      })
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    updateData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          const tempData = Object.assign({}, this.temp)
          tempData.timestamp = +new Date(tempData.timestamp) // change Thu Nov 30 2017 16:41:05 GMT+0800 (CST) to 1512031311464
          updateArticle(tempData).then(() => {
            const index = this.list.findIndex(v => v.id === this.temp.id)
            this.list.splice(index, 1, this.temp)
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: 'Update Successfully',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    handleDelete(row, index) {
      deleteById(row.id).then(() => {
        this.$notify({
          title: 'Success',
          message: 'Delete Successfully',
          type: 'success',
          duration: 2000
        })
      })
      this.list.splice(index, 1)
    },
    handleFetchPv(pv) {
      fetchPv(pv).then(response => {
        this.pvData = response.data.pvData
        this.dialogPvVisible = true
      })
    },
    handleDownload() {
      this.downloadLoading = true
      import('@/vendor/Export2Excel').then(excel => {
        const tHeader = ['timestamp', 'title', 'type', 'importance', 'status']
        const filterVal = ['timestamp', 'title', 'type', 'importance', 'status']
        const data = this.formatJson(filterVal)
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: 'table-list'
        })
        this.downloadLoading = false
      })
    },
    formatJson(filterVal) {
      return this.list.map(v => filterVal.map(j => {
        if (j === 'timestamp') {
          return parseTime(v[j])
        } else {
          return v[j]
        }
      }))
    },
    getSortClass: function(key) {
      const sort = this.listQuery.sort
      return sort === `+${key}` ? 'ascending' : 'descending'
    },
    fomatDate(time) {
      time = this.dayjs(time).format("YYYY-MM-DD");
      console.log(time); // 2020-09-30 02:02:02
      return time
    },
    handleRemove(file, fileList) {
      console.log(file, fileList);
    },
    handlePreview(file) {
      this.dialogImageUrl = file.url;
      // alert(file.url)
      this.dialogVisible = true;
    },
    handleAvatarSuccess(res, file) {
      this.imageUrl = URL.createObjectURL(file.raw);
    },
  }
}
</script>
